I recently got a Bluetooth scanner and I can't get it to connect to my 98 Tahoe's ECM. There's power to the scanner but it won't connect. Tested it on another car and it worked just fine. Below are the voltages I measured on the pins. Checked all fuses. Don't know what else to do.
2-0v
4-Gnd
5-Gnd
8-12v
9-3v
14-0v
16-12v
2-0v
4-Gnd
5-Gnd
8-12v
9-3v
14-0v
16-12v